Tomic forced to retire in Dubai

Australia's Bernard Tomic was forced to retire in the first set of his opening-round match at the ATP World Tour event in Dubai.

Tomic, a quarter-finalist in Marseille last week, was trailing Romanian Victor Hanescu 3-2 when he chose not to continue.

Tomic was suffering from what is being reported as a "general illness".

Meanwhile, Novak Djokovic trounced fellow Serb Viktor Troicki 6-1 6-4 in his first-round match as the world number one extended his unbeaten run to 14 matches.

Djokovic, whose winning streak stretches back to October and includes claiming a third straight Australian Open title, was broken once in the second set but was otherwise untroubled in his first match since Davis Cup duty in early February.

"I had three or four weeks of no tennis, so I was extremely focused to start well and I did really well in the first set," Djokovic, 25, said in a courtside interview.

"I was right behind his serve and I'm very satisfied with my performance and hopefully I can continue."

Former US Open champion Juan Martin Del Potro saved three match points on his way to beating Marcos Baghdatis 4-6, 6-4, 7-6 to make the second round.

Fourth seed Del Potro recovered from 4-1 down in the deciding set, with the Argentine's superior ground strokes ultimately wearing down his Cypriot opponent as dusk fell.

"Marcos also deserved to win but the luck was behind me and I played better in the big moments," Del Potro said in a courtside interview. "In the tiebreak I was solid."

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